US4610474A - Lifeboat release hook - Google Patents

Lifeboat release hook Download PDF

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Publication number
US4610474A
US4610474A US06/703,931 US70393185A US4610474A US 4610474 A US4610474 A US 4610474A US 70393185 A US70393185 A US 70393185A US 4610474 A US4610474 A US 4610474A
Authority
US
United States
Prior art keywords
hook
loop
engaging
plates
loaded position
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US06/703,931
Other languages
English (en)
Inventor
Jari Jaatinen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fiskars Veneveistamo Oy AB
Fiskars Oyj Abp
Original Assignee
Fiskars Veneveistamo Oy AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fiskars Veneveistamo Oy AB filed Critical Fiskars Veneveistamo Oy AB
Assigned to OY FISKARS AB reassignment OY FISKARS AB ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: JAATINEN, JARI
Application granted granted Critical
Publication of US4610474A publication Critical patent/US4610474A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B23/00—Equipment for handling lifeboats or the like
    • B63B23/40—Use of lowering or hoisting gear
    • B63B23/58—Use of lowering or hoisting gear with tackle engaging or release gear

Definitions

  • a quick method for loosening wire loops is necessary, particularly for disengaging life boats from davit wire loops.
  • the invention relates to a device for this purpose.
  • Two lifting cables are needed for lifeboats; one is fastened to the hook in the bow of the boat and the other to the hook in the stern. As both hooks must be loosened from the loop simultaneously, the disengagement has to be performed by remote control. Either release wires or hydraulics are used. This is also the case with the present invention.
  • hooks are mounted in bearings between two supporting plates, so that the plates, if correctly designed, help in loosening the loop when the hook turns. This is also the case with a hook designed in accordance with the present invention.
  • the disengaging device in accordance with the present invention functions both when loaded and unloaded when the safety lock has been released. This fulfills resolution MSC 48/3 of the International Martime Organisation.
  • the hook can, moreover, be returned to loading order quickly and its structure is relatively simple.
  • the device for disengaging a loaded or unloaded hook, after any existing safety mechanism has been released, either by a wire or by hydraulic remote control, which enables the simultaneous disengagement of several hooks, and which returns by gravity to its original position where it can be re-engaged for reloading comprises a pivot, which locks the hook in its position and which can be released by remote control only when the pivot is free, is, when the hook is loaded, first released from the load of the hook it locks, by moving the load of the hook onto a remotely controlled cylinder and piston so that the hook is then disengaged only after the pressure is discharged from the cylinder by remote control.
  • the movements of the hook are controlled, when the load is removed from the locking pivot, the holding loop being loosened from the hook, when the hook moves into a new position and when the hook returns to its original position, by shaped grooves or slots on the supporting plates in which the pivots or guide pins, fastened to the hook, move.
  • a wire or rope loop attached to the load loop can first be fastened to a hole in the supporting plate in which a locking pin secures the fastening.
  • FIGS. 1 and 2 show one of the hooks.
  • the hook In FIG. 1 the hook is in the position where it can be loaded.
  • One of the supporting plates 1 on the viewer's side has been broken away.
  • FIG. 2 shows the hook in its extreme position after disengagement.
  • the necessary additional pieces are drawn in a thin line dotted behind the supporting plate, and the sectioned parts of the pieces are indicated by diagonal lines.
  • the loop of the wire or cable can easily be fastened to hook 2, and the fastening is secured by a bolt pin 4 or stop.
  • locking pin 9 which moves in a tube, can be drawn aside axially (perpendicular to the plane of the figure) with a remote control cable or hydraulic transmission, so that the load will tend to draw hook 2 toward position 2'.
  • guide pins 10 fastened to the hook move in shaped grooves or slots 3 on supporting plate 1 from one end of the slot to the other, and the edge of supporting plate 1 releases the loop from the hook.
  • the hook After disengagement the hook returns to position 2 by the force of gravity back to its original position 2; locking pin 9 can be pushed back, and hook 2 is ready for reloading.
  • locking pivot 9 is moved by remote control by a cable or hydraulically, e.g. with a hand pump, for the required number of hooks, two in case of a life boat, function simultaneously. If required, additional locking can be provided for the remote control cable or for the control apparatus of the hydraulic device.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Battery Mounting, Suspending (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Detergent Compositions (AREA)
  • Removal Of Specific Substances (AREA)
  • Emergency Lowering Means (AREA)
US06/703,931 1984-02-22 1985-02-21 Lifeboat release hook Expired - Fee Related US4610474A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI840719 1984-02-22
FI840719A FI67518C (fi) 1984-02-22 1984-02-22 Anordning foer loesgoerande av lyftkrokar foer livbaotar

Publications (1)

Publication Number Publication Date
US4610474A true US4610474A (en) 1986-09-09

Family

ID=8518593

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/703,931 Expired - Fee Related US4610474A (en) 1984-02-22 1985-02-21 Lifeboat release hook

Country Status (8)

Country Link
US (1) US4610474A (sv)
DE (1) DE3505849A1 (sv)
DK (1) DK78885A (sv)
FI (1) FI67518C (sv)
GB (1) GB2155093A (sv)
NL (1) NL8500472A (sv)
NO (1) NO850660L (sv)
SE (1) SE8500743L (sv)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5078073A (en) * 1990-08-09 1992-01-07 Chevron Research And Technology Company Method and apparatus for a lifeboat safety strop
US5102176A (en) * 1990-01-26 1992-04-07 The Boeing Company Releasable lock mechanism
US5292165A (en) * 1992-02-18 1994-03-08 Wiklund Henry W Lifting hook with a safety latch and capable of being provided with automatic load release function
US6098470A (en) * 1998-11-11 2000-08-08 Alexander/Ryan Marine & Safety Co. Method and apparatus for testing hook release
EP1512621A2 (en) 2003-09-05 2005-03-09 Dean M. Pelley Lifeboat release mechanism
US7175216B1 (en) * 2000-11-10 2007-02-13 Nsl Engineering Pte. Ltd. Latch mechanism
US20080084079A1 (en) * 2006-10-05 2008-04-10 Tony Mora Lifeboat disengagement system
US20080084078A1 (en) * 2006-10-05 2008-04-10 Tony Mora Lifeboat disengagement system
US8746766B2 (en) 2012-06-07 2014-06-10 Randy Lewkoski Hook assembly
WO2015183101A1 (en) 2014-05-30 2015-12-03 Msi As Lifeboat release and retrieval system (lrrs)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1275265A (en) * 1917-11-09 1918-08-13 Daniel Keil Chain-fastener.
US1308549A (en) * 1919-07-01 Planthjhaph
US2476734A (en) * 1948-01-16 1949-07-19 Jellison Robert Latch construction
US2714731A (en) * 1950-06-12 1955-08-09 John M Binmore Release fittings for ships' lifeboats
US2864644A (en) * 1957-09-30 1958-12-16 Earl A Marryatt Cargo hooks
US3873146A (en) * 1974-04-17 1975-03-25 Campbell Ind Tether release device
US4095833A (en) * 1976-11-18 1978-06-20 Cranston Machinery Company, Inc. Swivel-mounted pneumatic-controlled releasing hook device
US4281867A (en) * 1979-10-10 1981-08-04 Whittaker Corporation Disengaging apparatus

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1308549A (en) * 1919-07-01 Planthjhaph
US1275265A (en) * 1917-11-09 1918-08-13 Daniel Keil Chain-fastener.
US2476734A (en) * 1948-01-16 1949-07-19 Jellison Robert Latch construction
US2714731A (en) * 1950-06-12 1955-08-09 John M Binmore Release fittings for ships' lifeboats
US2864644A (en) * 1957-09-30 1958-12-16 Earl A Marryatt Cargo hooks
US3873146A (en) * 1974-04-17 1975-03-25 Campbell Ind Tether release device
US4095833A (en) * 1976-11-18 1978-06-20 Cranston Machinery Company, Inc. Swivel-mounted pneumatic-controlled releasing hook device
US4281867A (en) * 1979-10-10 1981-08-04 Whittaker Corporation Disengaging apparatus

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5102176A (en) * 1990-01-26 1992-04-07 The Boeing Company Releasable lock mechanism
US5078073A (en) * 1990-08-09 1992-01-07 Chevron Research And Technology Company Method and apparatus for a lifeboat safety strop
US5292165A (en) * 1992-02-18 1994-03-08 Wiklund Henry W Lifting hook with a safety latch and capable of being provided with automatic load release function
US6098470A (en) * 1998-11-11 2000-08-08 Alexander/Ryan Marine & Safety Co. Method and apparatus for testing hook release
US7175216B1 (en) * 2000-11-10 2007-02-13 Nsl Engineering Pte. Ltd. Latch mechanism
US6920839B2 (en) 2003-09-05 2005-07-26 Dean M. Pelley Lifeboat release mechanism
US20050051079A1 (en) * 2003-09-05 2005-03-10 Pelley Dean M. Lifeboat release mechanism
EP1512621A2 (en) 2003-09-05 2005-03-09 Dean M. Pelley Lifeboat release mechanism
US20080084079A1 (en) * 2006-10-05 2008-04-10 Tony Mora Lifeboat disengagement system
US20080084078A1 (en) * 2006-10-05 2008-04-10 Tony Mora Lifeboat disengagement system
US7360498B1 (en) * 2006-10-05 2008-04-22 Survival Systems International, Inc. Lifeboat disengagement system
US7832350B2 (en) * 2006-10-05 2010-11-16 Survival Systems International, Inc. Lifeboat disengagement system
US8746766B2 (en) 2012-06-07 2014-06-10 Randy Lewkoski Hook assembly
WO2015183101A1 (en) 2014-05-30 2015-12-03 Msi As Lifeboat release and retrieval system (lrrs)
US10358190B2 (en) 2014-05-30 2019-07-23 Msi As Lifeboat release and retrieval system (LRRS)

Also Published As

Publication number Publication date
NO850660L (no) 1985-08-23
DK78885D0 (da) 1985-02-21
FI67518B (fi) 1984-12-31
FI840719A0 (fi) 1984-02-22
SE8500743L (sv) 1985-08-23
FI67518C (fi) 1985-04-10
SE8500743D0 (sv) 1985-02-18
DE3505849A1 (de) 1985-08-22
NL8500472A (nl) 1985-09-16
GB8503943D0 (en) 1985-03-20
DK78885A (da) 1985-08-23
GB2155093A (en) 1985-09-18

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Legal Events

Date Code Title Description
AS Assignment

Owner name: OY FISKARS AB VENEVEISTAMO 20810 TURKU 81 FINLAND

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:JAATINEN, JARI;REEL/FRAME:004376/0880

Effective date: 19850206

REMI Maintenance fee reminder mailed
LAPS Lapse for failure to pay maintenance fees
STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362

FP Lapsed due to failure to pay maintenance fee

Effective date: 19900909